Portable pedestal pan

ABSTRACT

The present invention is a portable pedestal pan—a specially designed structure that is used in places without interior bathrooms or where going to the bathroom is inconvenient (such as outdoors, in hospital wards, and in the vehicle) and that is easily portable. The present invention comprises a top board, a vertically retractable supporting mechanism that is set under the top board, wherein the supporting mechanism is equipped with a caging device for locking upon retraction. The supporting mechanism optionally has a bottom board  14  that is set underneath the supporting mechanism and is connected to it. The top board is optionally a ring with a hole in the middle. When the invention is used, the supporting mechanism under the top board is vertically unfolded, and is locked by the caging device, and a scrap bag is sleeved onto the top board. After use, the scrap bag is taken off. The supporting mechanism is folded. The present invention is easy to carry and reuse.

The present application claims the priority of Chinese Patent Application No. 201110006922.X, filed Jan. 13, 2011, under 35 U.S.C. §119, which is hereby incorporated by reference.

BACKGROUND OF THE INVENTION

The present invention relates to a pedestal pan.

FIELD OF THE INVENTION

Portable pedestal pans currently on the market often cannot be folded for use and take up a large space when carried. Inflatable portable pedestal pans are not convenient to use due to the need for inflation and provide insufficient support.

BRIEF SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide portable pedestal pans that are conveniently folded, carried and used.

The present invention provides the following technical solution to solve the above technical problem: a portable pedestal pan comprising a top board 3 and a vertically retractable supporting mechanism that is set under the top board 3, wherein the supporting mechanism is equipped with a caging device for locking upon retraction.

Compared with the existing technology, the present invention has the following advantages: when the portable pedestal pan of the present invention is used, the supporting mechanism under the top board is unfolded, and is locked by the caging device, and a scrap bag is sleeved onto the top board. After use, the scrap bag is taken off, the supporting mechanism is vertically folded. The present invention is easy to early and reuse.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is further explained with the following figures. The examples in the following figures do not constitute any restriction to the present invention.

FIG. 1 is a three-dimensional structural view of Example 1 when unfolded for use.

FIG. 2 is a whole sectional view of Example 1 when used (P-P sectional view in FIG. 3).

FIG. 3 is a side structure schematic diagram of FIG. 2.

FIG. 4 is the top view of Example 1.

FIG. 5 is a sectional view of Example 1 when folded for transportation.

FIG. 6 is a side structure schematic diagram of FIG. 5.

FIG. 7 is a three-dimensional structural view of Example 2 when unfolded for use.

FIG. 8 is a whole sectional view of Example 2 when used.

FIG. 9 is a structure schematic diagram of Example 2 when folded for transportation.

FIG. 10 is a diagram of the top board of Example 2.

FIG. 11 is a top view of Example 2 when folded for transportation.

FIG. 12 is an A-A sectional view of FIG. 11.

FIG. 13 is a three-dimensional structural view of Example 3 when unfolded for use.

FIG. 14 is a three-dimensional structural view of Example 3 when folded.

FIG. 15 is a three-dimensional sectional view of Example 3 when unfolded for use.

FIG. 16 is a three-dimensional sectional view of Example 3 when folded

FIG. 17 is a three-dimensional structural view of Example 4 when unfolded for use.

FIG. 18 is a three-dimensional structural view of Example 4 when folded

FIG. 19 is a three-dimensional sectional view of Example 4 when unfolded for use.

FIG. 20 is a three-dimensional sectional view of Example 4 when folded.

FIG. 21 is a front three-dimensional structural view of Example 5 when unfolded.

FIG. 22 is a reverse side three-dimensional structural view of Example 5 when unfolded.

FIG. 23 is a reverse side three-dimensional structural view of Example 5 when folded.

FIG. 24 is a front three-dimensional structural view of Example 5 when folded.

DETAILED DESCRIPTION OF THE INVENTION

The present invention is a portable pedestal pan—a specially designed structure that is used in places without interior bathrooms or where going to the bathroom is inconvenient (such as outdoor, in hospital wards, and in a vehicle) and that is easily portable.

The present invention comprises a top board 3, a vertically retractable supporting mechanism that is installed under the top board 3, wherein the supporting mechanism is equipped with a caging (position-limiting) device for locking upon retraction.

The supporting mechanism optionally has a bottom board 14 that is installed underneath the supporting mechanism and is connected to it.

The top board 3 is optionally a ring with a hole in the middle.

When the invention is used the supporting mechanism under the top board is vertically unfolded, and is locked by a caging device, and a scrap bag is sleeved onto the top board. After use, the scrap bag is taken off, the supporting mechanism is folded. The present invention is easy to carry and reuse.

The present invention is described in further detail by the following Examples:

Example 1

Referring to FIGS. 1-6, the present Example comprises an upper right guide rail 1, an upper right pulley 2, a top board 3, an upper right gliding hinge 4, a first right strut bar 5, a right strut bar hinge 6, a second right strut bar 7, a screw shaft 8, a front screw shaft block 9, a crank handle 10, a lower right sliding hinge 11, a lower right pulley 12, a lower right guide rail 13, a bottom board 14, an upper left pulley 15, an upper left guide rail 16, an inner block cloth 17, a left strut bar hinge 18, a first left strut bar 19, a second left strut bar 20, a left supporting spring 21, a lower left pulley 22, a lower left guide rail 23, a scrap bag 24, a connecting rod 25, a right supporting spring 26, a carrying bag 27 and an outer block cloth 28.

The supporting mechanism comprises the symmetric cross strut bars installed under the top board 3, which are the mutually crossing a first left strut bar 19 and a second left strut bar 20 as well as the mutually crossed a first right strut bar 5 and a second right strut bar 7. The first left strut bar 19 is connected to the second left strut bar 20 in the central part through the left strut bar hinge 18. The first right strut bar 5 is connected to the second right strut bar 7 in the central part through the right strut bar hinge 6. The upper end of the first right strut bar 5 is fixed at the bottom of the top board 3 through the upper right gliding hinge 4. The upper end of the second right strut bar 7 slides in the guide rail set at the bottom of the top board 3. The lower end of the second right strut bar 7 is fixed at the bottom board 14 through the lower right gliding hinge 11. The lower end of the first right strut bar 5 slides in the guide rail set at the bottom board 14 and locked by the caging device. The connection of the first left strut bar 19 and the second left strut bar 20 to the top board 3 and the bottom board 14 is symmetrically identical to that of the first right strut bar 5 and the second right strut bar 7.

The upper end of the first left strut bar 19 is fixed at the bottom of the top board 3 by the sliding hinge, the lower end of the second left strut bar 20 is fixed at the bottom board 14 by the sliding hinge.

The caging device comprises a connecting rod 25, the connecting rod 25 is connected to the crank handle 10, and the connecting rod 25 is welded with a nut coupling with a screw shaft 8 and is fixedly connected to the first left strut bar 19 and the first right strut bar 5. The crank handle 10 is detachably connected to the screw shaft 8. Cranking the crank handle 10 drives the screw shaft 8 to rotate, which in turn drives the connecting rod 25 to move, which in turn drives the movement of the first left strut bar 19 and the first right strut bar 5.

The strut bars' movement on the top board and bottom board is effectuated by the pulleys. Specifically, the lower left pulley 22 is fixed at the lower end of the first left strut bar 19. The lower right pulley 12 is fixed at the lower end of time second right strut bar 19. The lower left pulley 22 is buckled in the lower left guide rail 23, the lower right pulley 12 is buckled in the lower right guide rail 13. The lower left guide rail 23 and the lower right guide rail 13 are parallelly fixed at the bottom board 14.

The upper left pulley 15 is fixed at the upper end of the second upper left strut bar 20. The upper right pulley 2 is fixed at the upper end of the second upper right strut bar 7. The upper left pulley 15 is buckled in the upper left guide rail 16. The upper right pulley 12 is buckled in the upper right guide rail 1. The upper left guide rail 16 and upper right guide rail 1 are parallelly fixed under the top board.

The left supporting spring 21 and the right supporting spring 26 are installed on the bottom board. The left supporting spring 21 and the right supporting spring 26 are used to auxiliarily lift the top board 3 when the distance between the top board 3 and the bottom board 14 is at its minimum and the crank handle 10 is cranked. The arbitrarily folded inner block cloth 17 and the outer block cloth 28 are installed separately between the top board 3 and the bottom board 14 to make the present invention esthetically pleasing and safe to use.

When using the present invention, a user unzips the carrying bag 27, takes out the portable pedestal pan, sleeves the crank handle 10 onto the front end of the screw shaft 8, and cranks the crank handle 10 to drive the screw shaft 8 to rotate, and the top board of the present invention is automatically raised. After the top board is raised to the desired height, the user can stop cranking the crank handle 8. Then the user may sleeve the scrap bag 24 into the central hole of the top board 3 so as to form an inner chamber in the scrap bag, an easy-to-use portable pedestal pan is thus made. Once use is complete, the user gathers up the scrap bag 24, ties a knot at the opening of the scrap bag 24, and the scrap bag 24 with excrement can be disposed of in the right place when convenient. Then the user may crank the crank handle 10 in the reverse direction to lower the top board 3. When the top board 3 is at its lowest position, the user picks up the portable pedestal pan and places it into the carrying bag 27, and zips it up for storage.

To sum up, in this Example, an easy-to-use pedestal pan is formed when it ascends to the appropriate height by, the crank handle mechanism (a caging device). The crank handle mechanism (a caging device) can also be used to lower it into a very, thin size, thus easy to carry and store.

Example 2

Referring to FIGS. 7˜12, the present Example comprises a first hinge 31, a hook buckle 32, a top board 3, a second hinge 34, a first hinge pin 35, an upper supporting board 36, a torsion spring 37, a second hinge pin 38, a lower supporting board 39, a third hinge pin 310, a third hinge 311, a bottom board 14, a scrap bag 24, a carrying bag 27, a hook buckle spring 315, a fourth hinge pin 316, and a hook buckle clasp 317.

In the present Example, the supporting mechanism comprises an upper supporting board 36 and a lower supporting board 39. The upper supporting board 36 is connected to the top board 3 through the second hinge 34. The second hinge 34 is fixed on the top board 3. The upper supporting board 36 is connected to the second hinge 34 through the first hinge pin 35. The lower end of the upper supporting board 36 is connected to the upper end of the lower supporting board 39 through the hinge. The caging device comprises the torsion spring 37 which is set at the place of contact between the upper supporting board 36 and the lower supporting board 39, so as to form an outward convex angle between the upper supporting board 36 and the lower supporting board 39 when opened, to prop up the top board 3, and maintain stability between the upper supporting board (36) and the lower supporting board 39.

The optional bottom board 14 is installed under the top board. The lower end of the lower supporting board 39 is connected to the bottom board 14 through the third hinge 311. The third hinge 311 is fixed on the bottom board 14. The lower supporting board 39 is connected to the third hinge 311 through the third hinge pin 310. The upper supporting board 36, the lower supporting board 39 and the torsion spring 37 are connected together through the second hinge pin 38.

It is foldable between the upper supporting board 36 and the lower supporting board 39.

The hook buckle 32 is also installed under the top board 3. The hook buckle 32 is connected to the top board 3 through the first hinge 31. The first hinge 31 is fixed under the top bottom board 3. The hook buckle spring 315 is installed on the hook buckle 32. The hook buckle 32 is connected to the first hinge 31 through the hinge pin 316 and the hook buckle spring 315, and always maintains deflection in one direction under the action of the hook buckle spring 315. The hook buckle clasp 317 is installed on the bottom board 14. The end of the hook buckle 32 is equipped with a reverse hook. When carried, the upper supporting board 36 and the lower supporting board 39 are folded. The distance between the top board 3 and the bottom board 14 matches the length of the hook buckle 32. The reverse hook at the end of the hook buckle 32 is buckled into the hook buckle clasp 317, and remains buckled with the hook buckle clasp 317 under the action of the hook buckle spring 315, 50 that the upper supporting board 36 and the lower supporting board 39 remain folded, the distance between the top board 3 and the bottom board 14 is kept at the minimum, so as to make it easy to be placed into the carrying bag 27.

In the present Example, there are one or more hook buckles 32 and related structural components, as well as two or more sets of upper supporting boards 36 and lower supporting boards 39 and related structural components.

When using the present Example, a user may unzip the carrying bag 27, take out the portable pedestal pan that is in the folding state, pull the hook buckle 32 so that the reverse hook at the end of the hook buckle 32 is released from the hook buckle clasp 317 fixed on the bottom board 14. The top bottom 3 is automatically propped up a certain height to a stop under the action of the torsion spring 37, the upper supporting board 36 and the lower supporting board 39, so that the upper supporting board 36 and the lower supporting board 39 reach a stable position.

The user can sleeve the scrap bag 24 into the central hole of the top board 3, so as to form an inner chamber in the scrap bag. An easy-to-use portable pedestal pan is thus made. Once use is complete, the user may pick up the scrap bag 24, tie a knot at the opening of the scrap bag 24, and the scrap bag 24 with excrement can be disposed of in the right place when convenient.

To fold the present invention, the user may push the place of connection between the upper supporting board 36 and the lower supporting board 39 inward, so that the upper supporting board 36 and the lower supporting board 39 are released from the stop, and at the same time, the user may push the top board 3 toward the bottom board until the reverse hook at the end of the hook buckle 32 automatically buckles into the hook buckle clasp 317 under the action of the hook buckle spring 315, and the present invention is back to the folded state. Then, the user may place the pedestal pan of the present invention into the carrying bag 27 and zip it for storage.

To sum up, in this Example, a pedestal pan that is of the proper height and easy to use can be quickly set up by the mechanism comprising hinges and springs. It can also be easily and quickly reduced to very thin size, making it easy to carry and store.

Example 3

Referring to FIGS. 13˜16, one embodiment of the present invention comprises a top board 3, strut bars 51, the first strut bar connection pieces 52, the second strut bar connection pieces 53, a bottom board 14, the first connecting rods 54, the second connecting rods 55, a rotatable disk 56, a turntable shaft 57, a first caging post 58, a second caging post 59, a handle 510, the first bearings 511, the first shaft pins 512, the second shaft pins 513, the second bearings 514, and the third shaft pins 515.

In the present Example, the supporting mechanism comprises a rotatable disk 56 which is installed on the bottom board 14. At least three first strut bar connection pieces 52 which are set under the top board 3. An identical number of second strut bar connection pieces 53 which are set on the bottom board 14. The first strut bar connection pieces 52 are connected to the second bar connection pieces 53 by the strut bars 51. The top board 3 is rotatable. The second strut bar connecting pieces 53 are rotatable on the bottom board 14. The second strut bar connecting pieces 53 are connected to the second connecting rods 55. The second connecting rods 55 are connected to the first connecting rods 54. The first connecting rods 54 are connected to the rotatable disk 56. The caging device is installed on the bottom board 14.

Specifically, the first strut bar connection pieces 52 are rotatable around the first bearings 511 fixed under the top board 3. The upper end of the strut bars 51 are connected to the first strut bar connection pieces 52 through the first shaft pins 512 and are rotatable around the first shaft pin 512. The second strut bar connection pieces 53 are rotatable around the second bearings 514 fixed on the bottom board 14. The lower end of the strut bars 51 are connected to the first strut bar connection pieces 53 through the first shaft pins 512 and are rotatable around the second shaft pins 513. One end of the second connecting rods 55 is fastened to the second strut bar connection piece 53. The other end is connected to one end of the first connecting rod 54 through a shaft pin, and is rotatable around this pin shaft. The other end of the first connecting rod 54 is connected to the third pin shaft 515 fixed on the rotatable disk 56, and is rotate around the third pin shaft 515.

The rotatable disk 56 are rotatable around the turntable shaft 57 fastened onto the bottom board.

The caging device comprises the handle 510 fixed on the rotatable disk 56, and a first caging post 58 and a second caging post 59 are set on the bottom board. One end of the handle 510 is connected to the rotatable disk 56. One section of the handle 510 is positioned between the first caging post 58 and the second caging post 59. When the handle abuts the second caging post 59, an acute angle is formed between the second connecting rod 55 and the first connecting rod 54, and when the handle abuts the first caging post 58, an obtuse angle is formed between the second connecting rod 55 and the first connecting rod 54.

When in motion, viewed from the top, the top board rotates counterclockwise, the first strut bar connection pieces 52 and the second strut bar connection pieces 53 also rotate counterclockwise.

When the present Example unfolds, a user can pull the handle 510 fixed on the rotatable disk 56, the rotatable disk 56 rotates, driving the first connecting rods 54 and the second connecting rods 55 to rotate correspondingly. When the handle 510 abuts the second caging post 59, the angle between the first connecting rod 54 and the second connecting rod 55 is an acute angle. If the present Example is to fold up, the top board 3 must rotate clockwise, which will drive the second connecting rods 55 to rotate clockwise, but one end of the second connecting rod 55 is jacked by the first connecting rod 54, so that the present Example cannot fold up, thus locked in the unfolded state.

But when the handle 510 is pulled in a direction to abut the first caging post 58, the angle between the first connecting rod 54 and the second connecting rod 55 is a relatively big obtuse angle. When the top board 3 is folded up clockwise, the second connecting rod 55 is also driven to rotate clockwise, the second connecting rod 55 also rotates together with the first connecting rod 54 and would not get stuck.

The present Examples is used in essentially the same way as the above-described Examples. A user can unzip the carrying bag 27, take out the present invention, so that the top board 3 rotates against the bottom board 14 counterclockwise. When the strut bar 51 is completely erected, the user can pull the handle 510 toward the second caging post 59, so that a small acute angle is formed between the first connecting rod 54 and the second connecting rod. 55, and the supporting mechanism is in a self-locked condition. The user can sleeve the scrap bag 24 into the central hole of the top board 3, so as to form an inner chamber in the scrap bag, an easy-to-use portable pedestal pan is thus made. Once use is complete, the user can pick up the scrap bag 24, tie a knot at the opening of the scrap bag 24, and the scrap bag 24 with excrement can be disposed of in the right place when convenient.

When a user pulls the handle 510 to abut the first caging post 58, the top board 3 rotates against the bottom board 14 clockwise until the distance between the top board 3 and the bottom board is at its minimum. Then the user can place the present Example into the carrying bag 27, and zip up for storage.

To sum up, in this example, a pedestal pan that is of the proper height and easy to use is readily formed by the mechanism comprising a handle and strut bars, and locking and unlocking is easy to operate, making it easy to use.

Example 4

Referring to FIGS. 17˜20, the present Example comprises a top board 3, strut bars 51, the first strut bar connection pieces 52, the second strut bar connection pieces 53, a bottom board 14, the first connecting rods 54, the second connecting rods 55, a rotatable disk 56, a turntable shaft 57, an action switch 516, a motor 517, a motor gear 518, a sensor aperture 519 on a connecting rod B, a first infrared sensor switch 520, and a second infrared sensor switch 521.

The structure of this Example is essentially the same as Example 3, but the caging device is electronic, different from the manual caging device in Example 3. The rotatable disk 56 in the present Example is driven by the motor 517, different from the manual rotation in Example 3.

The caging device comprises the motor 517. The motor gear 518 is installed on the motor 517. The motor gear 518 drives the rotatable disk 56 to rotate. The first infrared sensor switch 520 and the second infrared sensor switch 521 are installed on the bottom board 14. The sensor aperture 519, corresponding to the first infrared sensor switch 520 and the second infrared sensor switch 521, is installed on the second connecting rod 55. When the second connecting rod 55 moves to the position where the sensor aperture 519 corresponds to the first infrared sensor switch 520, an acute angle is formed between the second connecting rod 55 and the first connecting rod 54. When the second connecting rod 55 moves to the position where the sensor aperture 519 corresponds to the second infrared sensor switch 521, an obtuse angle is formed between the second connecting rod 55 and the first connecting rod 54.

Specifically, when the top board 3 in the folded state rotates counterclockwise and unfolds until the strut bars 51 are completely erected, the sensor aperture 519 on the second connecting rod 55 corresponds to the second infrared sensor switch 521. Then, the motor 517 automatically starts up, driving the rotatable disk 56 by the motor gear 518 to rotate clockwise. The first connecting rod 54 pushes the second connecting rod 55 to turn until the sensor aperture 519 on the second connecting rod 55 corresponds to the first infrared sensor switch 520. The angle between the first connecting rod 54 and the second connecting rod 55 is a relatively small acute angle, so that the second strut bar connection pieces 53 cannot rotate clockwise, thus the top board 3 cannot automatically fold up, and the motor 517 automatically stops running.

When the present Example is to be folded up, a user can switch on the action switch 516, the motor 517 runs, driving the rotatable disk 56 to rotate counterclockwise, and the rotatable disk 56 in turn drives the first connecting rods 54 and the second connecting rods 55 to move correspondingly. When the sensor aperture 519 on the second connecting rod 55 corresponds to the second infrared sensor switch 521, the angle between the first connecting rod 54 and the second connecting rod 55 is a relatively big obtuse angle, the top board 3 can rotate clockwise to fold up, and the motor 517 automatically stops running.

To sum up, compared with Example 3, the present Example, through the motor operation, is easier to lock and unlock and more convenient to use.

Example 4 is used essentially the same way as Example 3. When the present Example is used, a user can unzip the carrying bag 27, take out the pedestal pan of the present invention, the top board 3 rotates counterclockwise against the bottom board 14. The motor 517 automatically starts up until the sensor aperture 519 on the second connecting rod 55 corresponds to the first infrared sensor switch 520, so that a small acute angle is formed between the first connecting rod 54 and the second connecting rod 55. The mechanism is in a self-locked condition, and the motor 517 automatically stops running. Then the user may sleeve the scrap bag 24 into the central hole of the top board 3, so as to form an inner chamber in the scrap bag, an easy-to-use pedestal pan is thus made. Once use is complete, the user can pick up the scrap bag 24, and tie a knot at the opening of the scrap bag 24. The scrap bag 24 with excrement can be disposed of in the right place when convenient.

Upon pressing the action switch 516 by a user, the motor 517 runs, the top board 3 rotates clockwise against the bottom board 14 until the sensor aperture 519 on the second connecting rod 55 corresponds to the first infrared sensor switch 520, so that a small acute angle is formed between the first connecting rod 54 and the second connecting rod 55. The top board 3 can rotate clockwise and is folded up, the motor 517 automatically stops running. Then a user can place the portable pedestal pan into the carrying bag 27, and zip up for storage.

Example 5

Referring to FIGS. 21˜24, the present example of the invention comprises a top board 3, a first supporting foot 71, a second supporting foot 72, supporting legs 73, conversion limit buckles 74, limit springs 75, convex limiting blocks 76, and shaft pins 77.

The supporting mechanism in the present Example comprises at least two supporting feet, and the upper ends of the supporting feet are connected to the top board 3.

In the present Example, there are two supporting feet, i.e., the supporting foot 71 and the second supporting foot 72. The upper ends of the first supporting foot 71 and the second supporting foot 72 are connected to the top board 3 through shaft pins 77 and bent to be parallel with the top board 3.

The first supporting foot 71 and the second supporting foot 72 can be two plane supporting feet, and can also consist of crossing or connected single columnar supporting legs. In the present Example, they are comprised of two connected columnar supporting legs 73 and are symmetrical.

In the present Example, there can also be multiple supporting feet, such as three columnar supporting feet, where each supporting foot can be a single supporting leg.

The caging device comprises conversion limit buckles 74, limit springs 75 and convex limiting blocks 76. The conversion limit buckles 74 and convex limiting blocks 76 are installed on the first supporting foot 71 and the second supporting foot 72, respectively, and the conversion limit buckles 74 and limit springs 75 are connected and coordinate with the limiting blocks 76 under the action of the limit springs (75).

When the present Example is used, a user first opens the supporting foot A and the supporting foot B, pulls the two supporting feet to make them rotate around the shaft pins 77, so that the first supporting foot 71 and the second supporting foot 72 move from the initially being parallel with the top board 3 to be perpendicular to the top board 3.

Secondly, the user pulls the conversion limit buckles 74 laterally away from the top board 3 until the conversion limit buckles 74 are blocked by the convex limiting blocks 76 under the action of limit springs 75. At this time, under the action of the conversion limit buckles 74 and limit springs 75, the first supporting foot 71 and the second supporting foot 72 cannot fold up laterally toward the top board 3, thus maintaining the stability of the present Example.

Then, the user may sleeve the scrap bag 24 into the central hole of the top board 3, so as to form an inner chamber in the scrap bag, an easy-to-use pedestal pan is thus made.

When folding up, the user may simply pull the conversion limit buckles 74 which are installed on the first supporting foot 71 and the second supporting foot 72 toward the top board 3. The conversion limit buckles 74 after rotating a certain angle are blocked by the convex limiting blocks 76 installed on the first supporting foot 71 and the second supporting foot 72, so that the first supporting foot 71 and the second supporting foot 72 automatically fold up to be parallel with the top board 3 under the action of the limit springs 75, making the present Example easy to fold up and carry.

The foregoing Examples have been provided to illustrate the technical solution of the present invention and are not intended to be limiting the scope of the present invention. Although the present invention is illustrated in detail with reference to the Examples, a person of ordinary skill in the relevant art shall understand that the technical solution of the present invention encompasses all modifications, alternations, and substitutions within the spirit and scope of the claims. 

1. A portable pedestal pan comprising a top board (3), and a retractable supporting mechanism that is set under the top board (3), wherein the supporting mechanism is equipped with a caging device for locking upon retraction and the supporting mechanism is retractable in a direction vertical to the top board.
 2. The portable pedestal pan according to claim 1, characterized in that the supporting mechanism is connected to a bottom board (14) that is set under the supporting mechanism.
 3. The portable pedestal pan according to claim 1, characterized in that the top board (3) is a ring with a hole in the middle.
 4. The portable pedestal pan according to claim 2, characterized in that the supporting mechanism comprises a symmetric cross strut bars set under the top board (3) comprising mutually crossing a first left strut bar (19) and a second left strut bar (20) and mutually crossing a first right strut bar (5) and a second right strut bar (7), wherein an upper end of the first right strut bar (5) is fixed at the bottom of the top board (3) through an upper right gliding hinge (4) and an upper end of the second right strut bar (7) slides in a first guide rail set at the bottom of the top board (3), a lower end of the second right strut bar (7) is fixed at the bottom board (14) through a lower right gliding hinge (11) and a lower end of the first right strut bar (5) slides in a second guide rail set at the bottom board (14) and locked by the caging device, and wherein the connection of the first left strut bar (19) and the second left strut bar (20) to the top board (3) and the bottom board (14) is symmetrically identical to that of the first right strut bar (5) and the second right strut bar (7).
 5. The portable pedestal pan according to claim 4, characterized in that the caging device comprises a connecting rod (25), wherein the connecting rod (25) is connected to a crank handle (10), and wherein the connecting rod (25) is welded with a nut coupling with a screw shaft (8) and is also fixedly connected to the first left strut bar (19) and the first right strut bar (5).
 6. The portable pedestal pan according to claim 5, characterized in that a lower left pulley (22) is fixed at a lower end of the first left strut bar (19), a lower right pulley (12) is fixed at a lower end of the first right strut bar (5), the lower left pulley (22) is buckled in a lower left guide rail (23), the lower right pulley (12) is buckled in a lower right guide rail (13), the lower left guide rail (23) and the lower right guide rail (13) are fixed at the bottom board (14) in parallel, an upper left pulley (15) is fixed at the upper end of the second left strut bar (20), an upper right pulley (2) is fixed at the upper end of the second upper right strut bar (7), the upper left pulley (15) is buckled in an upper left guide rail (16), the upper right pulley (2) is buckled in an upper right guide rail (1), and an upper left guide rail (16) and an upper right guide rail (1) are fixed under the top board (3) in parallel.
 7. The portable pedestal pan according to claim 7, characterized in that a left supporting spring (21) and a right supporting spring (26) are also installed on the bottom board (14).
 8. The portable pedestal pan according to claim 2, characterized in that the supporting mechanism comprises an upper supporting board (36), and a lower supporting board (39), wherein the upper supporting board (36) is connected to the top board (3) through a second hinge (34), wherein a lower end of the upper supporting board (36) is connected to an upper end of the lower supporting board (39) through a second hinge, and wherein the caging device comprises a torsion spring (37) which is installed at a place of contact between the upper supporting board (36) and the lower supporting board (39), so as to form an outward convex angle between the upper supporting board (36) and the lower supporting board (39) when opened, to prop up the top board (3), and maintain stability between the upper supporting board (36) and the lower supporting board (39).
 9. The portable pedestal pan according to claim 8, characterized in that a lower end of the lower supporting board (39) is connected to the bottom board (14) by a hinge (311), wherein the hinge (311) is fixed on the bottom board (14).
 10. The portable pedestal pan according to claim 9, characterized in that a hook buckle (32) is also installed under the top board (3), the hook buckle is connected to the top board (3) through an additional hinge (31), the additional hinge A (31) is fixed under the top board (3), a hook buckle spring (315) is installed on the hook buckle (32), the hook buckle (32) always maintains deflection in one direction under the action of the hook buckle spring (315), a hook buckle clasp (317) is installed on the bottom board (14), and the hook buckle (32) at its end is equipped with a reverse hook.
 11. The portable pedestal pan according to claim 10, characterized in that there are one or more hook buckles (32) and two or more upper supporting boards (36) and lower supporting boards (39).
 12. The portable pedestal pan according to claim 2, characterized in that the supporting mechanism comprises a rotatable disk (56) which is installed on the bottom board (14), at least three first strut bar connecting pieces (52) which are installed under the top board (3), and an identical number of second strut bar connecting pieces (53) which are installed on the bottom board (14), the first strut bar connecting pieces (52) are connected to the second strut bar connecting pieces (53) by strut bars (51), the top board (3) is rotatable, the second strut bar connecting pieces (53) are rotatable on the bottom board (14), the second strut bar connecting pieces (53) are connected to second connecting rods (5) the second connecting rods (55) are connected to first connecting rods (54), the first connecting rods (54) are connected to the rotatable disk (56), and the caging device is installed on the bottom board (14).
 13. The portable pedestal pan according to claim 12, characterized in that the caging device comprises a handle (510) fixed on the rotatable disk (56), and a first caging post (58) and a second caging post (59) both of which are installed on the bottom board, wherein one end of the handle (510) is connected to the rotatable disk (56), one section of the handle (510) is positioned between the first caging post (58) and the second caging post (59), wherein when the handle abuts the second caging post (59), an acute angle is formed between the second connecting rod (55) and the first connecting rod (54), and when the handle abuts the first caging post (58), an obtuse angle is formed between the second connecting rod (55) and the first connecting rod (54).
 14. The portable pedestal pan according to claim 12, characterized in that the caging device comprises an action switch (516), and a motor (517), wherein a motor gear (518) is installed on the motor (517), the motor gear (518) drives the rotatable disk (56) to rotate, wherein a first infrared sensor switch (52) and a second infrared sensor switch (521) are installed on the bottom board (14), and a sensor aperture (519) corresponding to a first infrared sensor switch (520) and a second infrared sensor switch (521) is installed on the second connecting rod (55), wherein when the second connecting rod (55) moves to a position where the sensor aperture (519) corresponds to the first infrared sensor switch (52), an acute angle is formed between the second connecting rod (55) and the first connecting rod (54), and when the second connecting rod (55) moves to a position where the sensor aperture (519) corresponds to the second infrared sensor switch (521), an obtuse angle is formed between the second connecting rod (55) and the first connecting rod (54).
 15. The portable pedestal pan according to claim 1, characterized in that the supporting mechanism comprises at least two supporting feet, and a top of the supporting foot is connected to the top board (3).
 16. The portable pedestal pan according to claim 15, characterized in that the two supporting feet are a first supporting foot (71) and a second supporting foot (72), and the tops of the first supporting foot (71) and the second supporting foot (72) are respectively connected to the top board (3) through shaft pins (77) and bent to be parallel with the top board (3).
 17. The portable pedestal pan according to claim 16, characterized in that the first supporting foot (71) and the second supporting foot (72) respectively comprises two connected support legs (73) and are symmetrical.
 18. The portable pedestal pan according to claim 15, characterized in that the caging device comprises conversion limit buckles (74), limit springs (75), and convex limiting blocks (76), wherein the conversion limit buckle (74) and the convex limiting block (76) are respectively installed on a first supporting foot (71) and a second supporting foot (72), respectively, and the conversion limit buckle (74) and the spring (75) are connected and mutually coordinated with the convex limiting block (76) under the action of the limit spring (75). 